The space filling Z-order curve might not be the best choice for geodetic data, given the closed nature of the earth's surface.

对于大地数据，由于地区表面具有封闭的特性，因此空间填充z顺序曲线可能不是最好的选择。

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After two decades, 95 percent of the elemental mercury on the surface of a filling had gone through a chemical reaction. It became beta-mercury sulfide, a black-colored solid.

经过了20年的光阴，旧填充物表面有95%的汞元素已经发生了化学反应，它变成了黑辰砂(beta - mercury sulfide)，一种黑色的固体。

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In terms of viscosity, osmosis time, contact angle and oil absorption this paper evaluates the effect of surface modification of mineral filling.

本文主要介绍改性石英填料的粘度、 浸润性能（ 渗透时间、浸润角、浸润点等）等指标，以及表面改性效果的评价方法。

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However, earlier this month, researchers from Durham University's Energy Institute reported that fracking was not a significant source of tremors that can be felt on the surface, compared to many other human activities such as mining or filling reservoirs with water.

BBC: Lancashire election candidates asked to oppose fracking